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ihvirnn STATES PATENT Fries..

OSOR MUSSINAN, JR., OF NFV YORK, ASSIGNOR TO FillEllllIAltD FABER, OF .FORT RICHMOND, N. Y.

NITING TUBES.

SPECIFICATION' forming part of Letters Patent No. 350,075, dated September 28, 1886.

.\pplicaliou filed March Q5, ISSG. Serial No. 196,598. (No model.)

To all whom, it may concern:

Be it known that l, Oscura MUssINaN, J r., a citizen of the United States, residing at New York, in the county and State ot' New York, have invented new and useful Improvements in Methods for Uniting Tubes to Fach Other, ot' which tlu` Yfollowing is a sjj ecilicaiion- This invention relates to a method of uniting tubes to each other, which is hereinafter described and claimed, reference being had to the accompanying drawings, in which- Figure il shows a metal blank for the inner tube. Fig. 2 shows an inner and an outer tube united to each other,and Fig. :3 is a crosssection on the line .fr .fr of Fig. 2. Figs. 4, l, and S represent modifications of theinvention. Fig. 5 isa erosssection on the line y y ol' Fig. l-. Fig. 7 is a cross-section on the line e' :of

Fig. G. Fig. 9 is a cross-section on the line l i. ol' Fig. b'. Fig. il() showsa blank l'or the inner tube, having its hole Il in the position required for the modiiications shown in Figs. S and 9. Fig. ll shows a press and suitable dies l'or uniting the tubes. Fig. 12 is a vertical section on the line 2 2 of Fig. ll. Fig. 153 is a vertical section on lhe line 3 3 of Fig. ll.

Similarlettersindicate corresponding parts.

The invent-ion is applied in the present e ample to pen-holders whose outertnbes couiain an inner tube or nib which is required to be united to the outer tube in such a manner that the tubes shall. other; but I do not restrict its application to that class of tubes, as it canbe used, generally, in tubes ot' thin or sheet metal. The inner tube or nib, A, is made from. a sheetmetal blank, (shown in Fig. 1,) which is cut out in proper form for that purpose, the hole B being punched out in the same operation. rlhe blank thus prepared is then bent into tubular form, its edges being left unclosed, so that it has aslit, C, extending throughout its length. The tube A is inserted in the 'outer tube, D, and is secured thereto by forcing into the hole B a portion of the outer tube, which overlies said hole in such a manner that the portion of the tube D which enters said hole engages and interlocks with its edge, so that the tubes become securely fastened to cach other. This be fastened to each.

is accomplished by means of a press, E, provided with a male die, F, of suit-able form,and a female dic, G, formed on a mandrel, M, adjustably secured inthe press. The tubes A and D are placed on the mandrel M in such a position that the hole I ofthe inner tube, A, will come directly over thefemale die G. The male die F is then pressed down upon the outer tube, D, with force sulticient to press its side down through the hole B of the tube A at H, Figs. 2 and 8, l'ar enough to engage the sides of the opening and to enter the fcmaledie, whose bottom will resist the pressure and cause the projecting portion ol' tube D to e.\'- pand and interlock with the edge of the hole. Fig. 2and its cross-section, Fig. 3, show the iuncraud outer tubes inter-locked by means ol` the dies F Cr in this manner, the interlocking` depression at Il and hole B being elongated, so as to prevent the tubes from turning on each other, as well as from having cndwise motion.

,In Fig. 4 and its cross-section, Fig. 5, the interlocking device shown in Figs. 3 and LI is combined with an interlocking device consisting of imlentations and projections I and J, produced in the inner and outer tubes from within outward without making openings in the metal, the operation being performed by means of a suitable press provided with a male die, K, which is placed inside of the inner tube, ou which die the tubes are pressed by a descending Afemale die, L, whose descent causes the male die to make indentations andprojections which engage with each other in both tubes. The press here shown is also provided with such dies Ii and L, so that all the dies F G and K L can be simultaneously operated and the tubes be united by means 0f the combined devices here shown.

The forms of the dies and their relative positions can be changed to suit the taste and judgment ot' the manulacturer.

In Figs. 4 and 5 the locking devices shown are in positions which correspond to the positions of the dies in the press, Fig. 1l. In

Figs. 6 and 7 indentations I and projections .I are arranged on both sides of and in line with the locking device H B. In Figs. S and 9 au indentation I and projection J are between two locking devices, Il B.

ICO

Fig. l() represents a metal blank provided with two holes, B, such as will be required in carrying out the form of the invention shown in Figs. 8 and 9.

What I claim as neW,and desire to secure by Letters'Patent, is-' v 1. The method of interlocking tubes one upon another by placing one inside the other, and then producing indentations I and pro- 4 1Q jectionsJ thereon, extending from within outward, interlocking with each other and pressing a portion ofthe outer tube into a hole, B, formed in the innel` tube, substantially as described.

2. Two or more tubes placed one within the other andv provided with indentations I and projections J, made in their sides,extending in an outward direction' and interlocking with each other,-combined With a projection or pro? jeetions, H, pressed from the outer tubein- Wardly into a hole, B, formed in the inner tube, substantially as shown and described.

3. The combination ot' the inner tube having the holeB with the outer tube formed with l the unbroken projection H, pressed into said hole and inter-locked therewith, substantially as described.

In testimony whereof I have hereunto set my hand and seal'in the scribing Witnesses.-

OSCAR MUSSINAN, JR. Vitnesses:

W. HAUFF, E. F. KASTENHUBER.

presence/of two sub- 

